<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script type="text/javascript">
    var s1=100
    var s2='100'
    var s3=100
    console.log(s1==s2)
    console.log(s1===s2)
</script>


</body>
</html>